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High end troubles
- ewolpert
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I have Pods and do not own an airbox. Currently my mains are at 118, but the same thing happened when I had 110s in. The difference for the jump was because I got the 118 with a stage 3 jet kit. Also when I had the 110s in the mid range RPM (4k - 7k) got very high pitched.
Eddie
78 KZ650 b2a
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- Street Fighter LTD
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- TURBO, Its Better to be Blown than Injected
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Dave
Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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- ewolpert
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Attachment WP_20150623_002.jpg not found
Eddie
78 KZ650 b2a
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- Street Fighter LTD
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Dave
Original owner 78 1000 LTD
Mr Turbo Race Kit, MTC 1075 Turbo pistons by PitStop Performance , Falicon Ultra Lite Super Crank, APE everything. Les Holt @ PDM's Billet Goodies . Frame by Chuck Kurzawa @ Logghe Chassis . Deep sump 5qt oil pan. RIP Bill Hahn
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- ewolpert
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Eddie
78 KZ650 b2a
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- zukdave
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I'd start with 17.5 pilots 117.5 mains needle one notch up from the bottom
looking at the needle as it's in the carb.meening point down.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.
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- SWest
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- 10 22 2014
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Dave is right. You want Mikuni jets. The others are drilled differently. I put in new 125's and pulled out the Miks I thought were 127.5's. They were Mik 125's the others were another brand. Instantly I had a huge flat spot. Wouldn't run for ST. I compared the two and they were different, way different. I put my old jets back in and are running them today.
Steve
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- missionkz
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However, be careful here because amateurish recommendations or novice carb and ignition tuning can get you into this kind of dilemma....
Sometimes a tweaker has to back up the boat and start from the stock settings again and this time, a little at a time...
From my friends at the KZ650 info page:
forums.kz650.info/index.php?topic=1853.0
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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- Barry2
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1976 KZ900
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- KZB2 650
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zukdave wrote: 118 mains where did you get them because they aren't Mikuni jets.
I'd start with 17.5 pilots 117.5 mains needle one notch up from the bottom
looking at the needle as it's in the carb.meening point down.
This is where I was with the stock motor and pods/Header and with my new set up..... was running very good although a hair rich stock and about perfect with the 700 kit ...... the 118 mains that come with the carb kit I "think" I read somewhere are equal to 110 stock jets and the nettle is different too....... hopefully someone will chime in on this.
1978 KZ650 b-2
700cc Wiseco kit 10 to 1.
1980 KZ750 cam, ape springs, stock clutch/ Barnett springs.
Vance and Hines Header w/ comp baffle and Ape pods, Dyna S and green coils, copper wires.
29MM smooth bores W/ 17.5 pilots, 0-6s and 117.5 main
16/42 gearing X ring chain and alum rear JT sprocket.
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- SWest
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- 10 22 2014
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Steve
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- missionkz
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In a 2 stroke, too much oil makes the mixture run too lean, not the other way around. I wonder if in a 4 stroke mixing oil in like that would simulate too lean too. ?swest wrote: You should leave the needle in the middle position. That is meant for minor elevation changes and fine tuning the mid range. I mentioned oil because when I was burning oil due to bad valve guide seals, I had to go with smaller pilots. I basically had a 2 stroke so to speak. When I did my valves, it was too lean so I went larger jets. Something to think about.
Steve
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado
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